Frost-proof protector for ventilation and other pipes



(No Model.)

T. O. BOYD.

FROST PROOF PROTECTOR FOR VENTILATION AND OTHER PIPBS.

Patented Aug; 3, 1886.

IIIIIIIHII .|l. IIIIIIIII pipe A.

IINiTnD STATES ATnNT Onricn.

THOMAS O. BOYD, OF CHICAGO, ILLINOIS.

FROST-PROOF PROTECTOR FOR VENTlLATlON AND OTHER PlPES.

SPECIFICATION forming part of Letters Patent No. 346,714, dated August3,1886.

Application filed March 29, i886.

To all whom it may concern.:

Serial No. 196,379. (No model.)

the pipe A, and thus protecting the latter from Be it known than i,Tennis o.v BOYD, of the action of frost.

Chicago, in the county of Cook and State of Illinois, have invented acertain new, useful, and Improved Frost-Proof Protector for Ventilationand other Pipes, of which the following is a description, referencebeing had to the accompanying drawings, in which- Figure l is a view ofa Ventilating-pipe as applied to a house-drain, said pipe having myimproved protector applied thereto, the two being shown in section. Fig.2 is a plan view of said protector as applied to a Ventilatingpipe, thehood being removed. Fig. 3 shows said protector as applied toaventilating-pipe extended through a roof.

Like letters of reference designate corresponding parts in the differentfigures.

The purpose of my invention is to provide a simple and inexpensive meansfor preventing the accumulation of boar-frost in ventilating-pipes,which purpose I accomplish in the manner hereinafter more particularlyset forth and claimed.

In the drawings, A represents a Ventilatingpipe, applied in the usualmanner to a housedrain, B, near the sewer-trap b, located outside ot'the building. Inserted within the ground aroundsaid pipe A, I place ahollow cylinder, C, provided with interior annular flanges, c d, at thetop and bottom, respectively, the opening in the former being smallerthan the outside diameter of the pipe A, while an annular bead, a, isformed upon the bottom of said fiange. The opening in the fiange c isAthe same as the outside diameter oi' the Thus the cylinder' O maybeplaced around the exposed end of the pipe A, the flange c resting uponthe top of' said pipe, while the surrounding earth helps to sustain thesame firmly in place.

The cylinder O is preferably cast. in one piece when applied to the endof a ventilating-pipe; but when otherwise applied it may be made insections, as hereinafter stated. In the former case I cause to be formedthereon or attached thereto two or more vertical standards or supports,c2, provided with laterallyextended lugs c, to which may be attached, bymeans of bolts c", a hood or cowl, D, of any suitable form. The flangesc c/ are caused to fit closely around the pipe A, the joints being madetight by means of putty, cement, or lead, thereby forming a dead-airspace, C', around Fig. 3 shows a modification of said construction, inwhich the cylinder Gis provided with an outwardly-turned ange, c5, whichis fitted closely to the roof E, which in turn is caused to fit aroundthe pipe A, as atc, thus taking the place of the flange c'. It isobvious that this form may be readily made from sheet metal and theparts bolted together, as clearly shown in the drawings.

I am aware that chimney-cowls and rainproofs have been constructed witha surrounding cylinder or conical jacket open at one or both ends topermit a circulation of air around the pipe, as shown in patents to B.J. Goodsell, No. 70,993, and S. F. Atkin, No. 302,373, respectively. Iamalso familiar with the patents to Babcock, No. 240,497, and Brosius, No.226,834, upon steam-boiler coverings, the special features of which Iherein expressly disclaim.

What I do claim, and desire to secure by Letters Patent, is-

1. As an`irnproved article of manufacture. a Ventilating-pipe, the upperor exposed end or portion of which is surrounded by an airtight bulb orjacket of such size as to forman intermediate deadair chamber betweensaid jacket and the exposed portion of said pipe, substantially as'described, and for the purposes set forth.

2. The combination, with the exposed end of a ventilatingpipe, of anair-tight jacket, C, the respective ends of which are closed withtightly-fitting fianges, substantially as and for the purposesdescribed.

3. rIhe combination, with the exposed end of a Ventilating-pipe, of' adetachable air-tight jacket provided with tightly-tting flanges c c',substantially as and for the purposes set forth.

4. rIhe combination, with the pipe A, of the cylinder C, provided withthe fianges cc', substantiall y as and for the purposes set forth.

5. As a new article of manufacture, the cylinder G, having anges c c',and means, as the supports c2 and lugs c3, for attaching a cowl thereto,substantially as and for the purposes set forth.

frnoiins. o. Born.

l Witnesses:

D. H. FLETCHER, J. B. HALPENNY.

